An artist absolutely has to be able to take criticism, or you will drive yourself mad.
I took no offense at all. Quite to the contrary, it is exactly the sort of sketch that you described. It is very heavy metal-esque, but then there is a sizeable commercial market for that kind of thing, and some of it is very good.
And just for the record, my favorite modern (probably of all genres for that matter) artist is BY FAR HR Giger:
He was the designer for the Alien Creature from the movie franchise "Alien."